PXB4221 Infineon Technologies AG, PXB4221 Datasheet - Page 234

• Manufacturer Part Number: PXB4221
• Description: IWE8 Interworking Element for 8 E1/T1 Lines
• Manufacturer: Infineon Technologies AG

Figure 44
8.3.4
The aliasing effect which is inherent to the SRTS algorithm causes the jitter tolerance at
513 Hz and all multiples of 513 Hz to be a copy of the jitter tolerance at 0 Hz. Jitter
Tolerance at low frequencies violate the requirements.
With jitter attenuator jitter tolerance at low frequencies is increased and all jitter
frequencies above 20 Hz are removed. As a result no aliasing is possible. The jitter
tolerance fulfills the requirements.
Data Sheet
100
0,1
10
1
1
SRTS Jitter Tolerance in T1 Mode
SRTS Jitter Tolerance in E1 Mode with Jitter Attenuator
10
SRTS Jitter Tolerance in E1 Mode
100
1000
10000
234
100000 1000000
PXB4219 / PXB4220 / PXB4221
Application Hints
Frequency [Hz]
-50 ppm
0 ppm
+50 ppm
ITU G.823
and I.431
2002-05-06